Food jar



FIG. 1 is a perspective view from above of the food jar embodying the ornamental design;

FIG. 2 is a perspective view from below of the food jar;

FIG. 3 is a front elevation view of the food jar, with the right, left and back elevation views being identical;

FIG. 4 is a top view of the food jar; and,

FIG. 5 is a bottom view of the food jar. 

The ornamental design for a food jar, as shown and described. 